2 Preface. 



both those who know a great deal about plants as well as those 

 whose knowledge is limited to the merest rudiments. In order to 

 save space descriptions of families and genera have been omitted, 

 their place being supplied by brief keys whenever it has seemed 

 necessary. 



A more descriptive and popular article might have been made, 

 but it would have been very unsatisfactory and, scientifically con- 

 sidered, worthless. 



It is earnestly hoped that those who wish to find out the rela- 

 tionships of the beautiful and interesting plants which they will 

 see along the trails and through the forests will be helped by this 

 Flora. The author is always ready to be of service to those who 

 may wish help, and any plants that cannot be determined are 

 especially desired for examination, not only to correct mistakes 

 but to make the issuance of a supplement possible at some future 

 time, adding to the species herein to be found. 



